The Overview of the 4 th Generation Mobile Communication System (2008)
Toshio Miki, Tomoyuki Ohya, Hitoshi Yoshino, Narumi Umeda
Abstract — In order to satisfy the expectation of the users to have more advanced wireless access even in the mobile environments, research and development efforts for realizing the...
Narumi Umeda, Toru Otsu, Tatsuro Masamura
NTT DoCoMo is conducting research on the fourth-generation (4G) mobile communication system. This article outlines the technical issues involved in establishing such a system taking into...
Special Feature Wireless QoS Control Technologies (2008)
Takeshi Yamashita, Hidetoshi Kayama, Lan Chen, Daisuke Kitazawa, Masayuki Motegi, Narumi Umeda
In the fourth-generation (4G) mobile communication system, all communications including realtime communications is expected to be carried by packets multiplexed on a shared radio channel to improve...
Special Feature IP-based Mobility Management Technology (2008)
Ichiro Okajima, Masahiro Inoue, Koji Omae, Hideaki Takahashi, Narumi Umeda
This article reviews recent progress in the study of IP-based mobility management technology for enhancing the mobility of cellular phones and other mobile nodes in fourth-generation mobile...
Narumi Umeda, Toru Otsu, Tatsuro Masamura
NTT DoCoMo is conducting research on the fourth-generation (4G) mobile communication system. This article outlines the technical issues involved in establishing such a system taking into...
UMEDA, Narumi, CHEN, Lan, KAYAMA, Hidetoshi
Supporting diversified rates for real-time communications will become possible and essential with the rapidly increasing transmission rates provided by the 4th generation (4G) mobile communication...
QIU, Heng, KAYAMA, Hidetoshi, UMEDA, Narumi
We aim to establish a highly efficient transmitting power control (TPC) scheme suitable for the reverse link of high-speed CDMA packet communication systems. Reservation-based access is assumed to be...